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# * Try to find CFITSIO. Variables used by this module: CFITSIO_ROOT_DIR -
# CFITSIO root directory Variables defined by this module: CFITSIO_FOUND -
# system has CFITSIO CFITSIO_INCLUDE_DIR - the CFITSIO include directory
# (cached) CFITSIO_INCLUDE_DIRS - the CFITSIO include directories (identical
# to CFITSIO_INCLUDE_DIR) CFITSIO_LIBRARY - the CFITSIO library (cached)
# CFITSIO_LIBRARIES - the CFITSIO libraries (identical to CFITSIO_LIBRARY)
# CFITSIO_VERSION_STRING the found version of CFITSIO, padded to 3 digits
# SPDX-License-Identifier: LGPL-3.0-only
if(NOT CFITSIO_FOUND)
find_path(
CFITSIO_INCLUDE_DIR fitsio.h
HINTS ${CFITSIO_ROOT_DIR}
PATH_SUFFIXES include include/cfitsio include/libcfitsio0)
if(CFITSIO_INCLUDE_DIR)
file(READ "${CFITSIO_INCLUDE_DIR}/fitsio.h" CFITSIO_H)
set(CFITSIO_VERSION_REGEX
".*#define CFITSIO_VERSION[^0-9]*([0-9]+)\\.([0-9]+).*")
if("${CFITSIO_H}" MATCHES ${CFITSIO_VERSION_REGEX})
# Pad CFITSIO minor version to three digit because 3.181 is older than
# 3.35
string(REGEX REPLACE ${CFITSIO_VERSION_REGEX} "\\1.\\200"
CFITSIO_VERSION_STRING "${CFITSIO_H}")
string(SUBSTRING ${CFITSIO_VERSION_STRING} 0 5 CFITSIO_VERSION_STRING)
string(REGEX REPLACE "^([0-9]+)[.]([0-9]+)" "\\1" CFITSIO_VERSION_MAJOR
${CFITSIO_VERSION_STRING})
# CFITSIO_VERSION_MINOR will contain 80 for 3.08, 181 for 3.181 and 200
# for 3.2
string(REGEX REPLACE "^([0-9]+)[.]0*([0-9]+)" "\\2" CFITSIO_VERSION_MINOR
${CFITSIO_VERSION_STRING})
else()
set(CFITSIO_VERSION_STRING "Unknown")
endif()
endif(CFITSIO_INCLUDE_DIR)
find_library(
CFITSIO_LIBRARY cfitsio
HINTS ${CFITSIO_ROOT_DIR}
PATH_SUFFIXES lib)
find_library(M_LIBRARY m)
mark_as_advanced(CFITSIO_INCLUDE_DIR CFITSIO_LIBRARY M_LIBRARY)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
CFITSIO
REQUIRED_VARS CFITSIO_LIBRARY M_LIBRARY CFITSIO_INCLUDE_DIR
VERSION_VAR CFITSIO_VERSION_STRING)
set(CFITSIO_INCLUDE_DIRS ${CFITSIO_INCLUDE_DIR})
set(CFITSIO_LIBRARIES ${CFITSIO_LIBRARY} ${M_LIBRARY})
endif(NOT CFITSIO_FOUND)
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